Refer to Exercise 20.18. Use regression analysis to calculate the linear and quadratic trends. Which line fits
Question:
In exercise 20.18
Plot the following time series. Would the linear or quadratic model fit better?
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1 2 3 4 5 6 7 Period Time Series 5 2.7 4.1 10.8 19.2 6.9 .6 1.3
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